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Time a block of code

Project description

harrison

Time a block of code.

Use as the context expression of a with statement:

>>> from harrison import Timer
>>> with Timer() as t:
>>>     ...
>>> print t.elapsed_time_ms
12345

When a description string is passed on initialization, the elapsed time will be printed on completion, keyed by this description.

>>> with Timer('My expensive block of code'):
>>>     ...
My expensive block of code: 12345 ms

You can also start and stop a Timer explicitly:

timer = Timer()
timer.start()

some_expensive_function(...)
print timer.elapsed_time_s

another_expensive_function(...)
timer.stop()
print timer.elapsed_time_s

You can also time each execution of a function using a decorator:

from harrison import profile

@profile('Describes the function')
def some_function():
    pass

# Without args, the function name (e.g. 'some_function') will be used
# as the description.
@profile()
def another_function():
    pass

You can also use RegisteredTimer, which groups together a bunch of named timers, provides utilities for serializing their times, and an optional global timer registry.

Named after John Harrison, the English carpenter and clockmaker who invented the marine chronometer.

Similar libraries

This is similar to the library contexttimer, but that library is licensed under the GPLv3 which is more restrictive than two-clause BSD license used here.

Development

pip install -r requirements_dev.txt
rake lint

Contribute

Pull requests welcome!

Support

If you are having issues, please let us know.

License

The project is licensed under the two-clause BSD license.

Project details


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